A two-dimensional model of electrochemical chloride removal from concrete
A two-dimensional model of electrochemical chloride removal from concrete
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DOI：
10.1016/s0927-0256(00)00177-4
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发表时间：
2001-02
影响因子：
3.3
通讯作者：
Yu Wang;Long-Yuan Li;C. Page
中科院分区：
文献类型：
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作者：
Yu Wang;Long-Yuan Li;C. Page
本文提出了混凝土电化学除氯（ECR）的二维计算机模型。该模型不仅考虑多组分混合物中带电离子静电耦合的影响，还考虑许多其他因素的影响，即由于离子结合而导致电解质液体和水泥固相之间界面上的离子吸附、孔隙率和孔隙结构弯曲度的影响。该模型产生了一个具有可变系数的非线性对流扩散方程组，该方程组使用伽辽金有限元方法求解。介绍了与电化学除氯相关的数值结果，并强调了一些重要特征。
This paper presents a two-dimensional computer model of electrochemical chloride removal (ECR) from concrete. The model involves consideration of not only the effects of electrostatic coupling of charged ions in a multi-component mixture but also the influence of a number of other factors, viz, adsorption of ions at interfaces between the electrolyte liquid and cement solid phases due to ionic binding, effects of porosity and tortuosity of pore structure. The model yields a system of non-linear convection–diffusion equations with variable coefficients which is solved using Galerkin finite element methods. Numerical results associated with electrochemical chloride removal are presented and some important features are highlighted.